In vitro assessment of protection from oxidative stress by various fractions of mazus pumilus
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
Chemical Society of Pakistan
Abstract
Bioactive compounds in food have been shown to maintain human health. Therefore the
aim of this investigation was to evaluate antioxidant potential of an edible herb Mazus pumilus
(Burm. f.) Steenis by spectrophotometric methods. Methanolic extract of the herb was obtained on
Soxhlet apparatus, and sequentially fractionized with organic solvents of increasing polarity. The
antioxidant potential of all these fractions was evaluated by four methods: 1,1-Diphenyl-2-
picrylhydrazyl (DPPH) free radical scavenging activity, total antioxidant activity, Ferric reducing
antioxidant power (FRAP) assay and ferric thiocyanate assay along with determination of their total
phenolics. The results revealed that n-butanol fraction exhibited highest percent inhibition of DPPH
radical as compared to other fractions. It showed 80.42±1.68 inhibition level, % of DPPH radical at a
concentration of 60 μg ml-1. The IC50 value of this fraction was 28.79±1.35 μg ml-1, relative to
ascorbic acid, having IC50
58.84±0.89 μg ml-1. It also showed highest total antioxidant activity
(1.01±0.08) as well as highest FRAP value (626.83±0.39 TE / μM ml-1), highest total phenolic
contents (88.30±1.09 GAE / mg g-1) and highest value of inhibition of lipid peroxidation (53.91±1.21
%) as compared to the other studied fractions. The results obtained from this study suggest that
Mazus pumilus is a valuable herb, which due to the presence of larger quantities of antioxidant
compounds inhibits the oxidative stress mechanism that lead to degenerative diseases.
Description
Keywords
Mazus Pumilus, DPPH Assay, Total Antioxidant Activity, Reducing Power, Total Phenolics, Inhibition of Lipid Peroxidation
Citation
J. Chem. Soc. Pak., Vol. 35, No.3, 2013